摘要
细沟侵蚀过程中水流跌坑的出现是极其重要的一环。跌坑的出现表明细沟侵蚀正在孕育 ,跌坑之间的相互贯通则表明细沟的形成。本文基于室内外观察、径流的最小耗能原理、坡面土壤抗冲性及土壤物理结构几方面对跌坑现象进行了论述 ,揭示了水流跌坑形成的内在必然性。这对认识细沟侵蚀的发生机理及演化模式 。
It is a very important point of the appearance of flow drop pit during the process of rill erosion. The drop pits coming forth shows the gestation of the rill, and theirs penetrating each other stand for the shaping of the rill. Based on the observations of in and out the laboratory, this paper discussed the drop pit phenomenon from the points of natural phenomenon, the theory of minimum energy dissipation, the capacity of soil anti erosion and structural of soil over slope. The work pointed out the internal inevitability of the forth coming of the drop pit, and will be a great help to deeply understanding both the mechanism and developing pattern of rill erosion, and to lessening the erosion over slope.
出处
《水土保持学报》
CSCD
北大核心
2001年第6期62-65,共4页
Journal of Soil and Water Conservation
关键词
细沟侵蚀
跌坑
最小耗能
rill erosion
drop pit
minimum energy dissipation
作者简介
白清俊,男,生于1967年,副教授,博士.1999年毕业于西北农林科技大学,现为山东农业大学博士后.主要从事流域水土保持及农业节水灌溉技术方面的研究, 发表论文20余篇.
